Maching Ball Game By R.Venkata Subbaiah.

#include <stdio.h>
#include <conio.h>
#include <graphics.h>
#include <dos.h>
#include <time.h>
#include <stdlib.h>

/* This program shows how to pick up the scan codes from a keyboard */
/* These define the scan codes(IBM) for the keys. All numbers are in decimal.*/

#define PAGE_UP     73
#define HOME        71
#define END         79
#define PAGE_DOWN   81
#define UP_ARROW    72
#define LEFT_ARROW  75
#define DOWN_ARROW  80
#define RIGHT_ARROW 77
#define F1          59
#define F2          60
#define F3          61
#define F4          62
#define F5          63
#define F6          64
#define F7          65
#define F8          66
#define F9          67
#define F10         68






void main()
{
 char msg[100];
 char KeyStroke;
  time_t t;
 int gd = DETECT, gm;
 int i, x, y, flag=0;
 int r=20;

 int VerSpeed=1;
 int HorSpeed=1;

 initgraph(&gd, &gm, "C:\\Turboc3\\BGI");  /* init graph */
 /* get mid positions in x and y-axis */
 x = getmaxx()/2;
 y = getmaxy()/2;


clock_t startTime = clock();

do
{
     setcolor(RED);
     setfillstyle(SOLID_FILL, RED);
     //floodfill(x, y, RED);
     circle(x, y, r);


     if(x==50 && y==50)
     {
     printf("\nPerfect Matched, Game Over \nGame Time %.2lf Secs.\nPres ESC to close..",clock() / (double) CLOCKS_PER_SEC);
     }

     /* target circle */
     setcolor(WHITE);
     circle(50, 50, r);

     /*line */
     setlinestyle(SOLID_LINE, 2, 1);

     line(0,350,700,350);
     /* move the C.P. to the center of the screen */
      moveto(getmaxx()-200,getmaxy()-100);

      sprintf(msg,"Speed Ver:%d Hor:%d",VerSpeed,HorSpeed);
      outtext(msg);
      moveto(getmaxx()-200,getmaxy()-85);
      outtext("PgUp   : Inc Ver Speed");
      moveto(getmaxx()-200,getmaxy()-70);
      outtext("PgDown : Dec Ver Speed");

      moveto(getmaxx()-200,getmaxy()-55);
      outtext("Home   : Inc Hor Speed");
      moveto(getmaxx()-200,getmaxy()-40);
      outtext("End    : Dec Hor Speed");

      moveto(getmaxx()-200,getmaxy()-25);
      time(&t);
      sprintf(msg,"Date : %s",ctime(&t));
      outtext(msg);

      moveto(getmaxx()-200,getmaxy()-10);
      sprintf(msg,"Colck Secs : %.2lf",clock() / (double) CLOCKS_PER_SEC);
      outtext(msg);


KeyStroke = getch();
if (KeyStroke == 0)
{
KeyStroke = getch(); // Even though there are 2 getch() it reads one keystroke
/* clears screen */
cleardevice();
switch (KeyStroke)
{
case UP_ARROW:
y-=VerSpeed;
circle(x, y, r);
break;
case DOWN_ARROW:
y+=VerSpeed;
circle(x, y, r);
break;
case LEFT_ARROW:
x-=HorSpeed;
circle(x, y, r);
break;
case RIGHT_ARROW:
x+=HorSpeed;
circle(x, y, r);
break;
case PAGE_UP:
VerSpeed+=1;
break;
case PAGE_DOWN:
VerSpeed-=1;
if(VerSpeed==-1)
VerSpeed=0;

break;
case HOME:
HorSpeed+=1;
break;
case END:
HorSpeed-=1;
if(HorSpeed==-1)
HorSpeed=0;
break;

}
}
else
//moveto(getmaxx()-100,getmaxy()-70);
cprintf("Use Arrow KeyStroke");

}
while (KeyStroke != 27); // 27 = Escape key

/* timee display */
/*
clock_t endTime = clock();
clock_t clockTicksTaken = endTime - startTime;
double timeInSeconds = clockTicksTaken / (double) CLOCKS_PER_SEC;
printf("\n%lf",timeInSeconds);
*/

getch();
closegraph();
}
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Output Screens
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